Looking at you blocks I looks like you have not pressed as you go properly. I have had that problem with other peoples blocks as well as my own. that is one reason why they are not right. Also check that you have a 1/4 seam, if this is nor right it also will make your block uneven. if you do not have a 1/4 foot measure 1/4inch from your need and put a piece of tape on that line and allow the fabric to follow along that edge. but always press, not iron( do not move the iron) you may have to unpick and start again--Sorry.